Anti-depressants are scary stuff... they'll turn you into a zombie.
If anxiety is a big part of your depression, try to get medicine for that instead.
It took about two months on Buspar (an anti-anxiety medication) before it started reducing the anxiety to the point where I could begin working through the depression myself.
I also highly recommend you find "neutral gathering places" (like coffee shops, community centers, churches), and begin talking to people there, and just for the experience of talking. Don't count on finding any real friends, but as long as you practice your communication skills, you will begin to understand it. Also, I recommend that you try to talk to individual people or pairs. Avoid groups of 3 or more. The more people there are, the less interaction and more rapid-fire exchanges (which can be very confusing) you'll see.
Also, no matter how difficult this may be, you'll need to learn to hide the fact that you're suffering, except to people who it's there job to be tolerant and understanding (like the preacher at a church). Most people will be immediately repulsed. At churches, they'd probably be happy to pray for you (of course, that requires being comfortable with such things), and you can use that as somewhat of an outlet, but you'll still need to hide it in general conversation...
...it's the "NT" thing to do.
Depression can take many forms, from anything from losing interest in everything, to a pervasive sadness, to a violent inner hell, to a numb unreality.
I've experienced all four, and in that order.
You'll need to fight this thing on your own (for the most part)... but never give into it.